____ hour is ____ long time in the subway. A: A; a B: An; a C: A; the D: An; the

It took us quite a long time to get here. It was ________ journey. A: three hour B: a three hour C: a three ­hour D: three hours

For one hour’s talk , about how long should you prepare for it?

Invited talk will be one hour long,followed by a 20-minute question and answer session.( )

—How far is it from Tianjin to Changchun?—It is a ________ flight from Tianjin to Changchun. A: 2-­hour-­long B: 2-­hours-­long C: 2 hours' long D: 2 hour long

How long has she been there(). A: An hour. B: An hour and a half. C: Half an hour.

For one hour’s talk , about how long should you prepare for it? A: 30 minutes . B: About one hour . C: About two hours D: 7.5hours or more

How long does a man usually dream in an eight hour sleep In an eight-hour sleep, a man usually dreams for .

A ()talk is too long for those children. A: two hours B: two hour’s C: two-hour D: two-hours

How long will the volunteer spend on math each week if teaching both math and English A: One hour a week. B: Two hours a week. C: One hour a day. D: Two hours a day.